added missing file

openair1/PHY/LTE_TRANSPORT/slpss.c

+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this file
+ * except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+/*! \file PHY/LTE_TRANSPORT/pss.c
+* \brief Top-level routines for generating primary synchronization signal (PSS) V8.6 2009-03
+* \author F. Kaltenberger, O. Tonelli, R. Knopp
+* \date 2011
+* \version 0.1
+* \company Eurecom
+* \email: florian.kaltenberger@eurecom.fr, oscar.tonelli@yahoo.it,knopp@eurecom.fr
+* \note
+* \warning
+*/
+/* file: pss.c
+   purpose: generate the primary synchronization signals of LTE
+   author: florian.kaltenberger@eurecom.fr, oscar.tonelli@yahoo.it
+   date: 21.10.2009
+*/
+
+//#include "defs.h"
+#include "PHY/defs.h"
+#include "PHY/extern.h"
+
+int generate_slpss(int32_t **txdataF,
+		   short amp,
+		   LTE_DL_FRAME_PARMS *frame_parms,
+		   unsigned short symbol,
+		   int subframe
+		   )
+{
+
+  unsigned int Nsymb;
+  unsigned short k,m,a;
+  uint8_t Nid2;
+  short *primary_sync;
+
+
+  Nid2 = frame_parms->Nid_SL / 168;
+  AssertFatal(Nid2<2,"Nid2 %d >= 2\n",Nid2);
+
+  switch (Nid2) {
+  case 0:
+    primary_sync = primary_synch0SL;
+    break;
+
+  case 1:
+    primary_sync = primary_synch1SL;
+    break;
+
+  default:
+    LOG_E(PHY,"[PSS] eNb_id has to be 0,1,2\n");
+    return(-1);
+  }
+  // scale by sqrt(72/62)
+  // note : we have to scale for TX power requirements too, beta_PSBCH !
+  a = (amp*SQRT_18_OVER_32_Q15)>>(15-2);
+  //printf("[PSS] amp=%d, a=%d\n",amp,a);
+
+  // The PSS occupies the inner 6 RBs, which start at
+  k = frame_parms->ofdm_symbol_size-3*12+5;
+  
+  //printf("[PSS] k = %d\n",k);
+  for (m=5; m<67; m++) {
+    for (int aa=0;aa<frame_parms->nb_antennas_tx;aa++) {
+      ((short*)txdataF[aa])[subframe*frame_parms->samples_per_tti + (2*(symbol*frame_parms->ofdm_symbol_size + k))] =
+	(a * primary_sync[2*m]) >> 15;
+      ((short*)txdataF[aa])[subframe*frame_parms->samples_per_tti + (2*(symbol*frame_parms->ofdm_symbol_size + k)) + 1] =
+	(a * primary_sync[2*m+1]) >> 15;
+    }    
+    k+=1;
+    
+    if (k >= frame_parms->ofdm_symbol_size) {
+      k-=frame_parms->ofdm_symbol_size;
+    }
+    
+    
+  }
+
+  return(0);
+}